Ploumanac'h Weather Records (FRE00171627)

Record envelope, standing records and threshold days for Ploumanac'h (FRE00171627), France, with 80 years of record.

Key Facts for Ploumanac'h

Ploumanac'h (FRE00171627) is a weather station in France at 48.83 latitude and -3.47 longitude, 55 m (180 ft) above sea level.
The station reports from 1947 to 2026, 80 years of record.
1,464 records set at Ploumanac'h still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Ploumanac'h set a daily record high maximum temperature of 24.2 C (75.6 F) on 30 August 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

Location: France, 48.83 latitude, -3.47 longitude.
Elevation: 55 m (180 ft).
Period of record: 1947 to 2026, 80 years.
Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

16 days at or beyond a record

The band shows the record high and record low for each calendar day at Ploumanac'h. The lines show the 2026 daily maximum and minimum. 16 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Ploumanac'h, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	17.8 C (64.0 F)	-11.0 C (12.2 F)	13.8 C (56.8 F)	1.4 C (34.5 F)
Feb	20.6 C (69.1 F)	-11.0 C (12.2 F)	19.7 C (67.5 F)	4.2 C (39.6 F)
Mar	25.0 C (77.0 F)	-3.2 C (26.2 F)	19.8 C (67.6 F)	3.3 C (37.9 F)
Apr	26.9 C (80.4 F)	0.0 C (32.0 F)	26.1 C (79.0 F)	5.2 C (41.4 F)
May	29.1 C (84.4 F)	1.8 C (35.2 F)	29.1 C (84.4 F)	8.0 C (46.4 F)
Jun	30.9 C (87.6 F)	6.0 C (42.8 F)	30.8 C (87.4 F)	10.8 C (51.4 F)
Jul	32.0 C (89.6 F)	8.2 C (46.8 F)	27.6 C (81.7 F)	14.1 C (57.4 F)
Aug	32.3 C (90.1 F)	7.8 C (46.0 F)	26.7 C (80.1 F)	12.6 C (54.7 F)
Sep	30.5 C (86.9 F)	7.0 C (44.6 F)	n/a	n/a
Oct	30.8 C (87.4 F)	1.0 C (33.8 F)	n/a	n/a
Nov	22.0 C (71.6 F)	-2.8 C (27.0 F)	n/a	n/a
Dec	18.3 C (64.9 F)	-10.0 C (14.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ploumanac'h still stand. 1950 holds the most, with 47.

Standing records at Ploumanac'h by the year they were set
Year set	Standing records
1947	7
1948	34
1949	17
1950	47
1951	13
1952	20
1953	10
1954	13
1955	25
1956	26
1957	10
1958	16
1959	7
1960	6
1961	19
1962	25
1963	42
1964	23
1965	19
1966	7
1967	9
1968	14
1969	20
1970	18
1971	13
1972	27
1973	8
1974	17
1975	11
1976	10
1977	28
1978	18
1979	23
1980	27
1981	21
1982	10
1983	15
1984	12
1985	30
1986	31
1987	24
1988	9
1989	24
1990	19
1991	19
1992	18
1993	25
1994	14
1995	10
1996	14
1997	28
1998	24
1999	11
2000	10
2001	10
2002	9
2003	17
2004	14
2005	22
2006	15
2007	19
2008	10
2009	12
2010	18
2011	23
2012	11
2013	20
2014	13
2015	26
2016	9
2017	20
2018	14
2019	14
2020	15
2021	10
2022	33
2023	19
2024	30
2025	29
2026	35

All-Time Record Progression

6 new records

6 all-time records were set at Ploumanac'h between 29 July 1984 and 25 June 2023. Each dot is a new record.

When Ploumanac'h set new all-time records
Date	Kind	Detail
1984-07-29	Record high maximum temperature	Record high maximum temperature 32.0 C (89.6 F)
1990-08-02	Record high minimum temperature	Record high minimum temperature 19.0 C (66.2 F)
1996-08-18	Record high minimum temperature	Record high minimum temperature 19.4 C (66.9 F)
2005-08-31	Record high minimum temperature	Record high minimum temperature 19.6 C (67.3 F)
2019-08-24	Record high maximum temperature	Record high maximum temperature 32.3 C (90.1 F)
2023-06-25	Record high minimum temperature	Record high minimum temperature 19.7 C (67.5 F)

Wettest Day of Each Month

Aug: 52.3 mm (2.1 in)

The wettest day on record for each calendar month at Ploumanac'h. The most was 52.3 mm (2.1 in) on 26 August 1960.

Record daily precipitation for each month at Ploumanac'h
Month	Record daily precipitation (mm)	Date
Jan	34.6 mm (1.4 in)	25 January 2004
Feb	32.3 mm (1.3 in)	10 February 1974
Mar	35.8 mm (1.4 in)	16 March 1958
Apr	38.1 mm (1.5 in)	16 April 1959
May	45.6 mm (1.8 in)	18 May 1996
Jun	33.0 mm (1.3 in)	20 June 2021
Jul	51.4 mm (2.0 in)	7 July 2004
Aug	52.3 mm (2.1 in)	26 August 1960
Sep	47.5 mm (1.9 in)	20 September 1949
Oct	43.8 mm (1.7 in)	9 October 2004
Nov	50.8 mm (2.0 in)	16 November 1972
Dec	47.7 mm (1.9 in)	5 December 1982

Period of Record Coverage

1947 to 2026

80 years of record at Ploumanac'h, 1947 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1947, 2026.

Days with data per year at Ploumanac'h
Year	Days with data	Share of year	Complete
1947	150	41%	No
1948	364	99%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	364	99%	Yes
1953	365	100%	Yes
1954	364	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	363	99%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	364	100%	Yes
1962	361	99%	Yes
1963	361	99%	Yes
1964	363	99%	Yes
1965	362	99%	Yes
1966	363	99%	Yes
1967	361	99%	Yes
1968	363	99%	Yes
1969	364	100%	Yes
1970	362	99%	Yes
1971	363	99%	Yes
1972	366	100%	Yes
1973	364	100%	Yes
1974	364	100%	Yes
1975	363	99%	Yes
1976	365	100%	Yes
1977	362	99%	Yes
1978	365	100%	Yes
1979	363	99%	Yes
1980	361	99%	Yes
1981	365	100%	Yes
1982	363	99%	Yes
1983	364	100%	Yes
1984	365	100%	Yes
1985	362	99%	Yes
1986	365	100%	Yes
1987	362	99%	Yes
1988	364	99%	Yes
1989	361	99%	Yes
1990	364	100%	Yes
1991	363	99%	Yes
1992	365	100%	Yes
1993	363	99%	Yes
1994	365	100%	Yes
1995	362	99%	Yes
1996	363	99%	Yes
1997	363	99%	Yes
1998	364	100%	Yes
1999	364	100%	Yes
2000	364	99%	Yes
2001	363	99%	Yes
2002	361	99%	Yes
2003	361	99%	Yes
2004	364	99%	Yes
2005	361	99%	Yes
2006	360	99%	Yes
2007	365	100%	Yes
2008	365	100%	Yes
2009	364	100%	Yes
2010	363	99%	Yes
2011	360	99%	Yes
2012	364	99%	Yes
2013	363	99%	Yes
2014	364	100%	Yes
2015	364	100%	Yes
2016	364	99%	Yes
2017	364	100%	Yes
2018	364	100%	Yes
2019	365	100%	Yes
2020	366	100%	Yes
2021	362	99%	Yes
2022	363	99%	Yes
2023	364	100%	Yes
2024	363	99%	Yes
2025	363	99%	Yes
2026	242	66%	No

Latest Records

Latest records at Ploumanac'h
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 August 2026	Ploumanac'h, FR	daily high max (Provisional)	24.2 C (75.6 F)	0.1 C (0.2 F)	20 years	14 of 100 (Routine)
26 August 2026	Ploumanac'h, FR	daily high max (Provisional)	26.6 C (79.9 F)	1.8 C (3.2 F)	64 years	35 of 100 (Notable)
15 August 2026	Ploumanac'h, FR	daily high min (Provisional)	18.0 C (64.4 F)	0.5 C (0.9 F)	4 years	11 of 100 (Routine)
14 August 2026	Ploumanac'h, FR	daily high min (Tie)	18.1 C (64.6 F)	tie	4 years	2 of 100 (Routine)
13 August 2026	Ploumanac'h, FR	daily high min	18.1 C (64.6 F)	0.5 C (0.9 F)	23 years	16 of 100 (Routine)
12 August 2026	Ploumanac'h, FR	daily high min	18.7 C (65.7 F)	0.4 C (0.7 F)	4 years	11 of 100 (Routine)
16 July 2026	Ploumanac'h, FR	daily high min (Tie)	16.7 C (62.1 F)	tie	0 years	2 of 100 (Routine)
14 July 2026	Ploumanac'h, FR	daily high min	17.1 C (62.8 F)	0.3 C (0.5 F)	23 years	15 of 100 (Routine)
11 July 2026	Ploumanac'h, FR	daily high min	17.4 C (63.3 F)	0.4 C (0.7 F)	39 years	21 of 100 (Routine)
10 July 2026	Ploumanac'h, FR	daily high min	18.1 C (64.6 F)	1.1 C (2.0 F)	9 years	17 of 100 (Routine)
8 July 2026	Ploumanac'h, FR	daily high min	17.5 C (63.5 F)	1.4 C (2.5 F)	3 years	17 of 100 (Routine)
7 July 2026	Ploumanac'h, FR	daily high min	17.7 C (63.9 F)	1.2 C (2.2 F)	11 years	18 of 100 (Routine)
6 July 2026	Ploumanac'h, FR	daily high max	27.6 C (81.7 F)	0.2 C (0.4 F)	56 years	24 of 100 (Routine)
27 June 2026	Ploumanac'h, FR	daily high min	18.2 C (64.8 F)	0.4 C (0.7 F)	0 years	10 of 100 (Routine)
26 June 2026	Ploumanac'h, FR	daily high min	19.1 C (66.4 F)	1.6 C (2.9 F)	24 years	24 of 100 (Routine)
25 June 2026	Ploumanac'h, FR	daily high max	28.2 C (82.8 F)	1.7 C (3.1 F)	5 years	15 of 100 (Routine)
24 June 2026	Ploumanac'h, FR	daily high min	17.5 C (63.5 F)	1.2 C (2.2 F)	3 years	14 of 100 (Routine)
23 June 2026	Ploumanac'h, FR	daily high max	30.8 C (87.4 F)	7.8 C (14.0 F)	5 years	40 of 100 (Notable)
23 June 2026	Ploumanac'h, FR	daily high min	17.1 C (62.8 F)	1.1 C (2.0 F)	67 years	34 of 100 (Routine)
22 June 2026	Ploumanac'h, FR	daily high max	26.9 C (80.4 F)	1.1 C (2.0 F)	65 years	31 of 100 (Routine)

Climate Trend

77 complete years, 1948 to 2025

One stripe for each of 77 complete years at Ploumanac'h, 1948 to 2025. Blue stripes are years cooler than the station's own mean of 11.9 C (53.3 F); red stripes are warmer. The coolest year was 1963, at 10.3 C (50.6 F), and the warmest was 2023, at 13.4 C (56.2 F). The strongest colour marks a difference of 1.6 C (2.9 F).

Annual mean temperature at Ploumanac'h as warming stripes, 1948 to 2025
Year	Annual mean temperature	Difference from the station mean
1948	11.5 C	-0.32 C
1949	12.2 C	+0.33 C
1951	11.5 C	-0.36 C
1952	11.6 C	-0.22 C
1953	11.6 C	-0.22 C
1954	12.1 C	+0.22 C
1955	11.5 C	-0.33 C
1956	10.7 C	-1.13 C
1957	11.8 C	-0.01 C
1958	11.3 C	-0.52 C
1959	12.2 C	+0.31 C
1960	11.7 C	-0.18 C
1961	12.1 C	+0.24 C
1962	10.9 C	-0.94 C
1963	10.3 C	-1.51 C
1964	11.5 C	-0.33 C
1965	11.1 C	-0.77 C
1966	11.8 C	-0.04 C
1967	11.3 C	-0.57 C
1968	11.1 C	-0.71 C
1969	11.3 C	-0.54 C
1970	11.2 C	-0.65 C
1971	11.3 C	-0.51 C
1972	10.8 C	-1.07 C
1973	11.2 C	-0.61 C
1974	11.3 C	-0.55 C
1975	11.5 C	-0.32 C
1976	11.6 C	-0.30 C
1977	11.3 C	-0.58 C
1978	11.2 C	-0.69 C
1979	10.8 C	-1.06 C
1980	11.2 C	-0.69 C
1981	11.3 C	-0.54 C
1982	11.6 C	-0.24 C
1983	11.4 C	-0.43 C
1984	11.2 C	-0.66 C
1985	11.1 C	-0.72 C
1986	10.6 C	-1.23 C
1987	11.2 C	-0.63 C
1988	11.9 C	+0.03 C
1989	12.4 C	+0.55 C
1990	12.2 C	+0.35 C
1991	11.0 C	-0.83 C
1992	11.6 C	-0.29 C
1993	11.3 C	-0.52 C
1994	12.1 C	+0.21 C
1995	12.1 C	+0.27 C
1996	11.4 C	-0.46 C
1997	12.5 C	+0.61 C
1998	12.2 C	+0.36 C
1999	12.6 C	+0.72 C
2000	12.1 C	+0.24 C
2001	12.3 C	+0.47 C
2002	12.7 C	+0.84 C
2003	12.5 C	+0.69 C
2004	12.3 C	+0.41 C
2005	12.5 C	+0.61 C
2006	12.5 C	+0.65 C
2007	12.5 C	+0.65 C
2008	12.1 C	+0.27 C
2009	12.1 C	+0.26 C
2010	11.4 C	-0.45 C
2011	12.8 C	+0.96 C
2012	12.0 C	+0.17 C
2013	11.8 C	-0.01 C
2014	13.0 C	+1.12 C
2015	12.7 C	+0.84 C
2016	12.4 C	+0.58 C
2017	12.7 C	+0.89 C
2018	12.5 C	+0.68 C
2019	12.7 C	+0.84 C
2020	13.0 C	+1.16 C
2021	12.4 C	+0.56 C
2022	13.3 C	+1.46 C
2023	13.4 C	+1.57 C
2024	13.2 C	+1.32 C
2025	13.3 C	+1.47 C

The annual mean temperature here has risen by 0.2 C (0.2 to 0.3) per decade over 1948 to 2025. In Fahrenheit: 0.4 F (0.3 to 0.5) per decade. The slope is a straight line fitted to 77 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Ploumanac'h
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.2 C (0.2 to 0.3) per decade	0.4 F (0.3 to 0.5) per decade	1948 to 2025	77	Rise
Mean daily maximum	0.2 C (0.1 to 0.2) per decade	0.3 F (0.2 to 0.4) per decade	1948 to 2025	77	Rise
Mean daily minimum	0.3 C (0.2 to 0.3) per decade	0.5 F (0.4 to 0.5) per decade	1948 to 2025	77	Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1947 to 2026

Yearly extremes at Ploumanac'h: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	32.3 C (90.1 F)	2019	27.1 C (80.8 F)	80
Coldest night (TNn)	-11.0 C (12.2 F)	1948	-2.2 C (28.0 F)	80
Wettest day (Rx1day)	52.3 mm (2.1 in)	1960	29.4 mm (1.2 in)	80
Wettest five days (Rx5day)	110.3 mm (4.3 in)	1972	61.9 mm (2.4 in)	80
Longest dry spell (CDD)	43 days	1955	21 days	80

Hottest day (TXx)

The hottest day of the year at Ploumanac'h, 1947 to 2026. The record is 32.3 C (90.1 F) in 2019, marked on the chart; the median year is 27.1 C (80.8 F).

Hottest day (TXx) at Ploumanac'h by year
Year	Hottest day (TXx)
1947	26.6 C (79.9 F)
1948	26.8 C (80.2 F)
1949	30.0 C (86.0 F)
1950	29.0 C (84.2 F)
1951	24.8 C (76.6 F)
1952	25.4 C (77.7 F)
1953	26.0 C (78.8 F)
1954	27.4 C (81.3 F)
1955	30.2 C (86.4 F)
1956	25.2 C (77.4 F)
1957	28.8 C (83.8 F)
1958	27.6 C (81.7 F)
1959	28.0 C (82.4 F)
1960	25.8 C (78.4 F)
1961	27.4 C (81.3 F)
1962	26.2 C (79.2 F)
1963	24.4 C (75.9 F)
1964	30.0 C (86.0 F)
1965	28.0 C (82.4 F)
1966	26.6 C (79.9 F)
1967	25.4 C (77.7 F)
1968	30.8 C (87.4 F)
1969	26.2 C (79.2 F)
1970	27.4 C (81.3 F)
1971	26.6 C (79.9 F)
1972	23.2 C (73.8 F)
1973	26.2 C (79.2 F)
1974	26.2 C (79.2 F)
1975	26.2 C (79.2 F)
1976	26.6 C (79.9 F)
1977	23.4 C (74.1 F)
1978	24.6 C (76.3 F)
1979	23.2 C (73.8 F)
1980	25.0 C (77.0 F)
1981	25.6 C (78.1 F)
1982	24.4 C (75.9 F)
1983	29.8 C (85.6 F)
1984	32.0 C (89.6 F)
1985	27.6 C (81.7 F)
1986	29.4 C (84.9 F)
1987	30.2 C (86.4 F)
1988	26.8 C (80.2 F)
1989	28.0 C (82.4 F)
1990	27.0 C (80.6 F)
1991	30.6 C (87.1 F)
1992	28.4 C (83.1 F)
1993	23.0 C (73.4 F)
1994	28.6 C (83.5 F)
1995	25.2 C (77.4 F)
1996	30.2 C (86.4 F)
1997	25.8 C (78.4 F)
1998	30.0 C (86.0 F)
1999	28.2 C (82.8 F)
2000	28.4 C (83.1 F)
2001	27.0 C (80.6 F)
2002	25.2 C (77.4 F)
2003	31.0 C (87.8 F)
2004	29.8 C (85.6 F)
2005	26.4 C (79.5 F)
2006	27.1 C (80.8 F)
2007	25.7 C (78.3 F)
2008	26.1 C (79.0 F)
2009	28.1 C (82.6 F)
2010	26.1 C (79.0 F)
2011	30.8 C (87.4 F)
2012	30.7 C (87.3 F)
2013	26.2 C (79.2 F)
2014	26.7 C (80.1 F)
2015	28.4 C (83.1 F)
2016	31.1 C (88.0 F)
2017	29.1 C (84.4 F)
2018	27.9 C (82.2 F)
2019	32.3 C (90.1 F)
2020	26.5 C (79.7 F)
2021	27.1 C (80.8 F)
2022	32.0 C (89.6 F)
2023	28.7 C (83.7 F)
2024	26.8 C (80.2 F)
2025	30.9 C (87.6 F)
2026	30.8 C (87.4 F)

Coldest night (TNn)

The coldest night of the year at Ploumanac'h, 1947 to 2026. The record is -11.0 C (12.2 F) in 1948, marked on the chart; the median year is -2.2 C (28.0 F).

Coldest night (TNn) at Ploumanac'h by year
Year	Coldest night (TNn)
1947	-2.0 C (28.4 F)
1948	-11.0 C (12.2 F)
1949	-2.8 C (27.0 F)
1950	-4.0 C (24.8 F)
1951	-1.2 C (29.8 F)
1952	-1.0 C (30.2 F)
1953	-5.2 C (22.6 F)
1954	-3.8 C (25.2 F)
1955	-4.0 C (24.8 F)
1956	-8.0 C (17.6 F)
1957	-1.0 C (30.2 F)
1958	-3.0 C (26.6 F)
1959	0.0 C (32.0 F)
1960	-2.0 C (28.4 F)
1961	-2.2 C (28.0 F)
1962	-3.2 C (26.2 F)
1963	-11.0 C (12.2 F)
1964	-3.8 C (25.2 F)
1965	-3.2 C (26.2 F)
1966	-8.8 C (16.2 F)
1967	-2.0 C (28.4 F)
1968	-5.0 C (23.0 F)
1969	-3.0 C (26.6 F)
1970	-5.6 C (21.9 F)
1971	-3.8 C (25.2 F)
1972	-4.4 C (24.1 F)
1973	-0.2 C (31.6 F)
1974	-0.4 C (31.3 F)
1975	-1.4 C (29.5 F)
1976	-2.0 C (28.4 F)
1977	-1.0 C (30.2 F)
1978	-2.2 C (28.0 F)
1979	-3.8 C (25.2 F)
1980	-2.2 C (28.0 F)
1981	-1.8 C (28.8 F)
1982	-3.0 C (26.6 F)
1983	-1.8 C (28.8 F)
1984	-0.6 C (30.9 F)
1985	-10.0 C (14.0 F)
1986	-6.0 C (21.2 F)
1987	-7.4 C (18.7 F)
1988	1.2 C (34.2 F)
1989	-2.2 C (28.0 F)
1990	-2.4 C (27.7 F)
1991	-6.0 C (21.2 F)
1992	-4.6 C (23.7 F)
1993	-6.6 C (20.1 F)
1994	-4.0 C (24.8 F)
1995	-1.6 C (29.1 F)
1996	-3.2 C (26.2 F)
1997	-3.6 C (25.5 F)
1998	-2.0 C (28.4 F)
1999	-1.0 C (30.2 F)
2000	-1.4 C (29.5 F)
2001	-2.0 C (28.4 F)
2002	-0.8 C (30.6 F)
2003	-2.4 C (27.7 F)
2004	-1.7 C (28.9 F)
2005	-1.8 C (28.8 F)
2006	-1.4 C (29.5 F)
2007	-2.4 C (27.7 F)
2008	-0.5 C (31.1 F)
2009	-3.1 C (26.4 F)
2010	-1.7 C (28.9 F)
2011	1.2 C (34.2 F)
2012	-4.9 C (23.2 F)
2013	-0.5 C (31.1 F)
2014	0.2 C (32.4 F)
2015	0.8 C (33.4 F)
2016	-1.2 C (29.8 F)
2017	-3.1 C (26.4 F)
2018	-4.6 C (23.7 F)
2019	-0.2 C (31.6 F)
2020	1.9 C (35.4 F)
2021	-2.7 C (27.1 F)
2022	-0.8 C (30.6 F)
2023	0.1 C (32.2 F)
2024	-1.5 C (29.3 F)
2025	-0.5 C (31.1 F)
2026	1.4 C (34.5 F)

Wettest day (Rx1day)

The wettest day of the year at Ploumanac'h, 1947 to 2026. The record is 52.3 mm (2.1 in) in 1960, marked on the chart; the median year is 29.4 mm (1.2 in).

Wettest day (Rx1day) at Ploumanac'h by year
Year	Wettest day (Rx1day)
1947	18.6 mm (0.7 in)
1948	30.0 mm (1.2 in)
1949	47.5 mm (1.9 in)
1950	33.5 mm (1.3 in)
1951	25.7 mm (1.0 in)
1952	44.8 mm (1.8 in)
1953	26.9 mm (1.1 in)
1954	19.9 mm (0.8 in)
1955	24.8 mm (1.0 in)
1956	26.5 mm (1.0 in)
1957	22.8 mm (0.9 in)
1958	35.8 mm (1.4 in)
1959	38.1 mm (1.5 in)
1960	52.3 mm (2.1 in)
1961	19.6 mm (0.8 in)
1962	29.2 mm (1.1 in)
1963	29.0 mm (1.1 in)
1964	43.2 mm (1.7 in)
1965	38.7 mm (1.5 in)
1966	24.1 mm (0.9 in)
1967	28.0 mm (1.1 in)
1968	22.0 mm (0.9 in)
1969	37.6 mm (1.5 in)
1970	26.1 mm (1.0 in)
1971	24.9 mm (1.0 in)
1972	50.8 mm (2.0 in)
1973	26.6 mm (1.0 in)
1974	33.3 mm (1.3 in)
1975	24.6 mm (1.0 in)
1976	26.7 mm (1.1 in)
1977	31.5 mm (1.2 in)
1978	35.7 mm (1.4 in)
1979	34.8 mm (1.4 in)
1980	30.2 mm (1.2 in)
1981	35.5 mm (1.4 in)
1982	47.7 mm (1.9 in)
1983	40.5 mm (1.6 in)
1984	34.6 mm (1.4 in)
1985	19.2 mm (0.8 in)
1986	41.8 mm (1.6 in)
1987	30.9 mm (1.2 in)
1988	28.4 mm (1.1 in)
1989	24.2 mm (1.0 in)
1990	32.4 mm (1.3 in)
1991	21.4 mm (0.8 in)
1992	27.0 mm (1.1 in)
1993	24.6 mm (1.0 in)
1994	34.4 mm (1.4 in)
1995	29.6 mm (1.2 in)
1996	45.6 mm (1.8 in)
1997	33.2 mm (1.3 in)
1998	37.4 mm (1.5 in)
1999	29.0 mm (1.1 in)
2000	28.6 mm (1.1 in)
2001	25.0 mm (1.0 in)
2002	25.4 mm (1.0 in)
2003	21.0 mm (0.8 in)
2004	51.4 mm (2.0 in)
2005	34.4 mm (1.4 in)
2006	26.2 mm (1.0 in)
2007	27.6 mm (1.1 in)
2008	26.8 mm (1.1 in)
2009	24.2 mm (1.0 in)
2010	30.7 mm (1.2 in)
2011	30.0 mm (1.2 in)
2012	27.3 mm (1.1 in)
2013	30.0 mm (1.2 in)
2014	33.5 mm (1.3 in)
2015	37.2 mm (1.5 in)
2016	25.9 mm (1.0 in)
2017	28.4 mm (1.1 in)
2018	35.8 mm (1.4 in)
2019	30.7 mm (1.2 in)
2020	35.7 mm (1.4 in)
2021	33.0 mm (1.3 in)
2022	20.3 mm (0.8 in)
2023	26.0 mm (1.0 in)
2024	35.8 mm (1.4 in)
2025	23.4 mm (0.9 in)
2026	21.2 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ploumanac'h, 1947 to 2026. The record is 110.3 mm (4.3 in) in 1972, marked on the chart; the median year is 61.9 mm (2.4 in).

Wettest five days (Rx5day) at Ploumanac'h by year
Year	Wettest five days (Rx5day)
1947	55.7 mm (2.2 in)
1948	68.0 mm (2.7 in)
1949	97.3 mm (3.8 in)
1950	68.5 mm (2.7 in)
1951	47.2 mm (1.9 in)
1952	95.4 mm (3.8 in)
1953	54.9 mm (2.2 in)
1954	52.7 mm (2.1 in)
1955	74.1 mm (2.9 in)
1956	70.0 mm (2.8 in)
1957	58.3 mm (2.3 in)
1958	56.9 mm (2.2 in)
1959	65.6 mm (2.6 in)
1960	59.8 mm (2.4 in)
1961	55.5 mm (2.2 in)
1962	61.9 mm (2.4 in)
1963	60.1 mm (2.4 in)
1964	78.4 mm (3.1 in)
1965	56.6 mm (2.2 in)
1966	58.0 mm (2.3 in)
1967	67.5 mm (2.7 in)
1968	41.6 mm (1.6 in)
1969	58.4 mm (2.3 in)
1970	47.2 mm (1.9 in)
1971	66.1 mm (2.6 in)
1972	110.3 mm (4.3 in)
1973	58.1 mm (2.3 in)
1974	68.6 mm (2.7 in)
1975	46.6 mm (1.8 in)
1976	68.2 mm (2.7 in)
1977	54.6 mm (2.1 in)
1978	74.6 mm (2.9 in)
1979	48.9 mm (1.9 in)
1980	64.6 mm (2.5 in)
1981	86.9 mm (3.4 in)
1982	68.7 mm (2.7 in)
1983	62.8 mm (2.5 in)
1984	54.6 mm (2.1 in)
1985	43.8 mm (1.7 in)
1986	95.6 mm (3.8 in)
1987	60.5 mm (2.4 in)
1988	63.1 mm (2.5 in)
1989	56.2 mm (2.2 in)
1990	75.1 mm (3.0 in)
1991	56.8 mm (2.2 in)
1992	52.2 mm (2.1 in)
1993	74.0 mm (2.9 in)
1994	82.7 mm (3.3 in)
1995	74.4 mm (2.9 in)
1996	62.0 mm (2.4 in)
1997	60.2 mm (2.4 in)
1998	79.6 mm (3.1 in)
1999	84.8 mm (3.3 in)
2000	54.2 mm (2.1 in)
2001	60.0 mm (2.4 in)
2002	68.2 mm (2.7 in)
2003	47.8 mm (1.9 in)
2004	76.2 mm (3.0 in)
2005	65.4 mm (2.6 in)
2006	66.8 mm (2.6 in)
2007	54.0 mm (2.1 in)
2008	57.2 mm (2.3 in)
2009	42.8 mm (1.7 in)
2010	73.8 mm (2.9 in)
2011	75.5 mm (3.0 in)
2012	60.7 mm (2.4 in)
2013	60.8 mm (2.4 in)
2014	61.9 mm (2.4 in)
2015	63.2 mm (2.5 in)
2016	77.4 mm (3.0 in)
2017	55.6 mm (2.2 in)
2018	62.7 mm (2.5 in)
2019	78.0 mm (3.1 in)
2020	109.2 mm (4.3 in)
2021	47.8 mm (1.9 in)
2022	53.8 mm (2.1 in)
2023	60.1 mm (2.4 in)
2024	70.4 mm (2.8 in)
2025	54.6 mm (2.1 in)
2026	57.6 mm (2.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ploumanac'h, 1947 to 2026. The record is 43 days in 1955, marked on the chart; the median year is 21 days.

Longest dry spell (CDD) at Ploumanac'h by year
Year	Longest dry spell (CDD)
1947	27 days
1948	20 days
1949	38 days
1950	17 days
1951	15 days
1952	20 days
1953	22 days
1954	25 days
1955	43 days
1956	20 days
1957	23 days
1958	25 days
1959	26 days
1960	24 days
1961	30 days
1962	23 days
1963	18 days
1964	20 days
1965	12 days
1966	15 days
1967	22 days
1968	19 days
1969	25 days
1970	24 days
1971	16 days
1972	21 days
1973	17 days
1974	29 days
1975	21 days
1976	41 days
1977	21 days
1978	34 days
1979	35 days
1980	15 days
1981	19 days
1982	24 days
1983	22 days
1984	29 days
1985	20 days
1986	22 days
1987	17 days
1988	28 days
1989	21 days
1990	36 days
1991	27 days
1992	15 days
1993	21 days
1994	15 days
1995	19 days
1996	32 days
1997	29 days
1998	15 days
1999	13 days
2000	18 days
2001	18 days
2002	20 days
2003	16 days
2004	21 days
2005	15 days
2006	17 days
2007	24 days
2008	19 days
2009	17 days
2010	24 days
2011	29 days
2012	17 days
2013	21 days
2014	21 days
2015	13 days
2016	16 days
2017	29 days
2018	16 days
2019	22 days
2020	23 days
2021	20 days
2022	19 days
2023	22 days
2024	14 days
2025	14 days
2026	18 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

42 years with a frost

Across 42 years with a frost, the median last spring frost at Ploumanac'h falls on 18 February and the median first autumn frost on 11 December, which leaves a median of 296 days between them.

Fitted over all years, the growing season changes by +4.5 days per decade at this station.

Frost dates and growing season at Ploumanac'h
Measure	Median, all years	Earliest period	Recent period (1970 to 2022)	Recent against earliest	Fitted trend
Last spring frost	18 February	n/a	17 February	n/a	-2.8 days per decade
First autumn frost	11 December	n/a	12 December	n/a	+1.7 days per decade
Growing days	296 days	n/a	298 days	n/a	+4.5 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

78 years, 1948 to 2025

A day with at least 29.8 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 56.8 mm (2.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Ploumanac'h: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	29.8 mm (1.2 in)
5 years	36.8 mm (1.4 in)
10 years	41.5 mm (1.6 in)
25 years	47.6 mm (1.9 in)
50 years	52.2 mm (2.1 in)
100 years	56.8 mm (2.2 in)	Longer than the 78 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 78 years of values from 1948 to 2025.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 52.3 mm (2.1 in) in 1960; 51.4 mm (2.0 in) in 2004; 50.8 mm (2.0 in) in 1972.

Station Changes

2 suspected

2 changes were suspected in the annual mean temperature of Ploumanac'h, at 1967 and 1996. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1967 ran 0.3 C (0.5 F) lower than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1996 ran 0.2 C (0.4 F) higher than in the years before (likely change).

Suspected changes in the annual mean temperature at Ploumanac'h, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1967	-0.3	-0.5	likely	5
1996	+0.2	+0.4	likely	5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Climate Twins

2011 to 2025 against 1961 to 1990

Over 2011 to 2025, Ploumanac'h had a mean temperature of 12.8 C (55.0 F) and 837.4 mm (33.0 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Oviedo (Spain, 636 km away), Belle Ile - le Talut (France, 171 km away) and Charco Verde (Cfe) (Mexico, 8,849 km away).

Climate twins of Ploumanac'h: stations whose 1961 to 1990 climate is closest to its 2011 to 2025 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Oviedo	Spain	636 km (395 mi)	12.8 C (55.0 F)	968.9 mm (38.1 in)	0.72
Belle Ile - le Talut	France	171 km (106 mi)	12.1 C (53.8 F)	685.0 mm (27.0 in)	0.96
Charco Verde (Cfe)	Mexico	8,849 km (5,499 mi)	13.2 C (55.8 F)	834.6 mm (32.9 in)	1.12

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

Data for Ploumanac'h standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ploumanac'h threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).